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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STM32F446ME датащи(PDF) 133 Page - STMicroelectronics |
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STM32F446ME датащи(HTML) 133 Page - STMicroelectronics |
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133 / 201 page  DocID027107 Rev 5 133/201 STM32F446xC/E Electrical characteristics 174 I2S interface characteristics Unless otherwise specified, the parameters given in Table 66 for the I2S interface are derived from tests performed under the ambient temperature, fPCLKx frequency and VDD supply voltage conditions summarized in Table 16, with the following configuration: • Output speed is set to OSPEEDRy[1:0] = 10 • Capacitive load C = 30 pF • Measurement points are done at CMOS levels: 0.5VDD Refer to Section 6.3.17: I/O port characteristics for more details on the input/output alternate function characteristics (CK, SD, WS). tw(CKH) QSPI clock high and low - (T(CK) / 2) - 2 - T(CK) / 2 ns tw(CKL) T(CK) / 2 - (T(CK) / 2) +2 ts(IN) Data input setup time - 0 - - th(IN) Data input hold time - 5.5 - - tv(OUT) Data output valid time 2.7V <VDD< 3.6V - 5.5 6.5 1.71V <VDD< 3.6V - 8 9.5 th(OUT) Data output hold time - 3.5 - - 1. Guaranteed based on test during characterization. Table 65. QSPI dynamic characteristics in DDR Mode(1) (continued) Symbol Parameter Conditions Min Typ Max Unit Table 66. I2S dynamic characteristics(1) Symbol Parameter Conditions Min Max Unit fMCK I2S Main clock output - 256 x 8K 256 x Fs(2) MHz fCK I2S clock frequency Master data - 64 x Fs MHz Slave data - 64 x Fs DCK I2S clock frequency duty cycle Slave receiver 30 70 % |
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